4. RESULTS AND DISCUSSIONS
4.1 The Suitability maps
Table 6 The suitability area for rice, sugar-cane, cassava and
rubber tree, Chi watershed, Northeast of Thailand.
The suitability map resulting from the
spatial overlay of the land qualities for rice,
sugar-cane, cassava and rubber tree are
shown in figure2 The suitability area in
addition to the spatial information of the
crops is shown in table 6. The study
provides the overall insight into each land
quality for crops and the suitability resulting
from the integrations of the land qualities
spatially and quantitatively. It is evident
from the study that land suitability for
cassava covers over 30% of the area for
highly and moderately suitable land.